Dough trough hoist



Nov. 27, 1951 E E. FOLKENROTH ET AL 2,576,831

DOUGH TROUGH HOIST 3 Sheets-Sheet 1 Filed June 23, 1949 INVENTOR.EFOLKENROTH ABELARDO GAWLA EARL Mmrney Nov. 27, 1951 E. E. FOLKENROTH ETAL 2,576,331

DOUGH TROUGH HOIST Filed June 23, 1949 3 Sheets-Sheet 2 INVENTOR.EARLEFoLKENRoTH ABELARDO G.Av|| A By It.

Attorney Nov. 27, 195] E. E. FOLKENROTH ET AL 2,576,831

DOUGH TROUGH HOIST Filed June 23, 1949 3 Sheets-Sheet 3 INVENTOR.

9 EARL EFOLKENROTH LL. ABELARDQ GAWLA Attorney Patented Nov. 27, 1951DOUGH TROUGH HOIST Earl E. Folkenroth and Abelardo G. Avila, York,

Pa., assignors to The Standard Stoker Company, Inc., a corporation ofDelaware Application June 23, 1949, Serial No. 100,912

4 Claims.

In commercial bread making, the dough is moved in huge troughs, mountedon casters, and pushed by workmen from a mixer to a proof room, and backagain, or to a dough divider. As the tub of a mixer may be 5' high atthe rim and the receiver of a dough divider may be about the same heightit is apparent that getting the dough from the trough into the mixer tubor dough divider receiver requires heavy labor and involves danger ofpollution.

The principal object of this invention is to provide a simple machine orhoist that will raise the loaded trough to an appropriate height anddischarge the dough safely into the tub or dough divider receiver.

Generally speaking, this is accomplished with a trough cage or cradleswung on power-rotated cranks and equipped with means to tilt the cradleand trough at an appropriate height to deliver the dough to a chuteleading to the mixer tub.

Fig. l is a front elevation of the hoist with the trough in position'tobe handled by it;

Fig. 2 is a vertical section on the line 2-2 of Fig. 1;

Fig. 3 is a vertical section on the line 3--3 of Fig. 1 with the troughshown in elevation;

Fig. 4 is a horizontal section on the line 44 of Fig. 2;

Fig. 5 is a diagrammatic representation of the hoist in the position theparts assume after the power-operated cranks have moved throughapproximately 90 degrees; and

Fig. 6 is a similar diagrammatic view showing the parts as the contentsof the tub are being discharged through a chute into the tube of amixer.

But these specific drawings and the corresponding description are usedfor the purpose of illustrative disclosure only.

This embodiment is designed for use with 10 Union Steel troughs DT 3410shown at I mounted on 6" casters I I by means of brackets I2 and havingan overall height of 31 The hoist includes side mounts or columns I3 andi4 equipped with bearings I5 and I6 for a main power driven andsupporting shaft I'I having adjacent to the bearings I 5 and I6 crankarms I8 and I9 connected at their free ends by an auxiliary cradlesupporting shaft 26.

The cradle, in this instance, is a generally rectangular box open at thetop and one side and cut away at the bottom and the back to affordclearance for the casters II and the brackets I2. It is thus composed ofbottom supporting pieces or ledges 2| at each side and connected withflaring side pieces 22 journalled on the auxiliary shaft 26 and securedto the back 23, which is also secured to the bottom pieces 2|. Thus, thecradle takes the form of side stirrups swung from the auxiliary shaft 20and connected by the back 23.

The side pieces 22 are equipped with pins or abutments 24 at their outersides to bear against the crank arms I8 and I9 as the parts move fromthe position shown in Fig. 5 to that shown in Fig. 6, and thus effectthe tilting of the cradle and the trough.

The side pieces are also extended rearwardly over the back 23 to formbrackets 25 in which a chute shaft 26 is journalled. Fixed to that shaftfor rotation with it is a dough chute 21 having a generally flat bodyportion and sides 28 converging and increasing in height toward the freeend of the chute, as best shown in Figs. 1 and 3.

The chute is automatically moved from the inverted position shown inFig. 3, where the dough contacting surface 29 is protected from dust andit covers the trough I0, to the position shown in Fig. 6, in which itserves to guide the dough from the trough I0 into the mixer 30.

This is accomplished by linkage including levers 3I fixed to the shaft26 and connected by pivoted links 32 with brackets 33 on the crank armsI8 and I9.

- In operation, the trough to be emptied into a mixer or the like isrolled into the position shown in Figs. 1 and 3, and the shaft I1 is setin rotation. The crank arms I8 and I9 lift the cradle, and with it thetrough, and move it through the position shown in Fig. 5 to that shownin Fig. 6.

The arms move through approximately degrees while the cradle with thetrough swings free and upright by gravity. Then, the pins 24 strike thecrank arms I8 and I 9, and the cradle and trough begin to tilt towardthe position shown in Fig. 6 and the dough is discharged down the chute21, which is automatically moved into the correct position leading fromthe trough to the mixer.

In this latter position, the trough rests against the back 23 of thecradle, and, if necessary, its rim is sustained by brackets 34 on theinside of the side pieces 22 of the cradle.

Preferably, the shaft I1 is power operated under control of pushbuttons, up, down, and stop, and limit switches. As here shown, it isdriven by an electric motor 35 through reducing gearing 36 and wormgearing 31. With such an arrangement, the operation described will beinitiated by pushing an up button, which will start the motor, to rotatethe shaft I! in a clockwise direction in Figs. 5 and 6 and acounterclockwise direction in Fig. 3. As it approaches the positionshown in Fig. 6, a suitable limit switch will stop the motor. The returnmovement will be initiated by pushing the down switch, which willreverse the shaft, and, as the parts approach the positions shown inFigs. 1 and 3, another limit switch will stop the motor again. The stopbutton is for stopping the cradle in any position desired. 5

This particular embodiment designed for the Union Steel trough has theaxis of the main shaft 57, 6'4 from the floor, and 128 on centers in thebearings I5 and it. The shaft oscillates through an arc of 240 degreesin about seconds, and the chute 21 automatically takes a position todeliver the dough into the mixer at a height of 5'.

Different troughs will require changes in construction of cradle orcage, and make other appropriate changes desirable.

While the mainshaft may be supported from over-head structure, thearrangement shown is very well suited to common conditions in bakeriesin which the floors are strong enough to carry the loads.

The overall height of the apparatus brings it gives ample head roombeneath the main shaft The chute is normally in inverted position, whereit is protected from dirt and dust, and is easily accessible forcleaning and greasing.

We claim: 7

1. In a device of the class described, a shaft, rotary crank arms on theshaft, a cradle mounted to swing on the crank arms and bear a doughtrough, means to limit relative movement between the crank arms and thecradle whereby the arms will first raise the cradle with freedom toswing from them and afterwards will tilt the cradle to discharge doughfrom the trough borne by it, a chute associated with the cradle, andmeans to swing the chute from a position over the trough borne by thecradle to a position to receive dough from the trough.

. 2. In a device of the class described, a main shaft, rotary crank armson the shaft, a cradle mounted to swing on the crank arms and bear adough trough, means to limit relative movement between the crank armsand the cradle whereby the arms will first raise the cradle with freedomto swing from them and afterwards will tilt the cradle to dischargedough from the trough borne by it, a chute rotatably mounted on thecradle, and linkage to swing the chute from an inverted position overthe trough borne by the cradle to a position to receive dough from thetrough.

3. In a device of the class described, a main shaft, rotary crank armson the shaft, a cradle mounted to swing on the crank arms and bear adough trough, means to limit relative movement between the crank armsand the cradle whereby the arms will first raise the cradle with freedomto swing from them and afterwards will tilt the cradle to dischargedough from the trough borne by it, a chute pivotally mounted on thecradle, and linkage'connecting the said chute with said crank arms, saidlinkage being operative by swinging movement of said crank arms to swingthe chute from an inverted position over thetrough borne by the cradleto a position to receive dough irom the trough.

4. In a device of the class described, a main shaft, rotary crank armson the shaft, a cradle mounted to swing on the crank arms and bear adough trough, means to limit relative movement between the crank armsand the cradle whereby the arms will first raise the cradle with freedomswing from them and afterwards will tilt the cradle to discharge doughfrom the trough borne by it, a chute pivotally mounted on the cradle,and linkage connecting said chute and said crank arms, said linkagebeing responsive to the relative movement between the cradle and arms toswing the chute outwardly about its pivotal connection irom an invertedposition over the trough borne by the cradle, said chute being movablethereafter as a unit with said cradle to a position to receive doughdischarged from the trough.

EARL E. FOLKENROTH. ABELARDO G. AVILA.

REFERENGES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 141,808 1 Morton Aug. 12, 18731,943,6l McCarron Jan. 16, 1934 2,186,478 Del-luff Jan. 9, 1940 FOREIGNPATENTS Number Country Date 161,771 Great Britain Apr. 21, 1921 -l06,951France 1910 Certificate of Correction Patent No. 2,576,831

November 27, 1951 EARL E. FOLKENROTH ET AL. It is he th the name of theassignee in the above y described an specified as The Standard StokerComave been described and specified as the said Letters Patent should beread e may conform to the record of the case in numbered

